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Ex 8.2

Ex 8.2, 1 (i)

Ex 8.2, 1 (ii)

Ex 8.2, 1 (iii)

Ex 8.2, 1 (iv) Important

Ex 8.2, 1 (v) Important

Ex 8.2, 2 (i) (MCQ) You are here

Ex 8.2, 2 (ii) (MCQ)

Ex 8.2, 2 (iii) (MCQ) Important

Ex 8.2, 2 (iv) (MCQ)

Ex 8.2, 3 Important

Ex 8.2, 4 (i) Important

Ex 8.2, 4 (ii) Important

Ex 8.2, 4 (iii)

Ex 8.2, 4 (iv)

Ex 8.2, 4 (v) Important

Last updated at Aug. 16, 2023 by Teachoo

Ex 8.2, 2 Choose the correct option and justify your choice : (i) (2 tanβ‘γ30Β°γ)/(1 + π‘ππ2 30Β°) = sin 60Β° (B) cos 60Β° (C) tan 60Β° (D) sin 30Β° We know that , tan "30Β°" = π/βπ So, (π πππβ‘γππΒ°γ)/(π + ππππ ππΒ°) = (π Γ (π/βπ))/(π + (π/βπ)^π ) = (2/β3)/(1 + 1/3) = (2/β3)/(4/3) = π/βπΓπ/π = 2/β3Γ(β3 Γ β3)/4 = βπ/π Options are (A) sin 60Β° (B) cos 60Β° (C) tan 60Β° (D) sin 30Β° Since, sin "60Β°" = βπ/π So, the correct answer is (a)